From ccd9d51ede69f08f60d9ab3c824b93ceda73afc8 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Wed, 16 Mar 2016 15:41:23 +0100
Subject: [PATCH] RPi: Enable caches for rpi2
Now that we have support for running with caches enabled in HYP mode,
opt in to that on the Raspberry Pi 2. This brings a significant performance
boost.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/arm/mach-bcm283x/Kconfig | 1 +
arch/arm/mach-bcm283x/init.c | 7 +++++++
include/configs/rpi_2.h | 1 -
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-bcm283x/Kconfig b/arch/arm/mach-bcm283x/Kconfig
index 2315a13438..1a7baf69e5 100644
--- a/arch/arm/mach-bcm283x/Kconfig
+++ b/arch/arm/mach-bcm283x/Kconfig
@@ -12,6 +12,7 @@ config TARGET_RPI
config TARGET_RPI_2
bool "Raspberry Pi 2"
select CPU_V7
+ select ARMV7_LPAE
endchoice
diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
index d2d366ba4f..4fa94dbeeb 100644
--- a/arch/arm/mach-bcm283x/init.c
+++ b/arch/arm/mach-bcm283x/init.c
@@ -15,3 +15,10 @@ int arch_cpu_init(void)
return 0;
}
+
+#ifdef CONFIG_ARMV7_LPAE
+void enable_caches(void)
+{
+ dcache_enable();
+}
+#endif
diff --git a/include/configs/rpi_2.h b/include/configs/rpi_2.h
index bea4ebda7f..13dc8de143 100644
--- a/include/configs/rpi_2.h
+++ b/include/configs/rpi_2.h
@@ -10,7 +10,6 @@
#define CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_BCM2836
#define CONFIG_SYS_CACHELINE_SIZE 64
-#define CONFIG_SYS_DCACHE_OFF
#include "rpi-common.h"
--
2.39.5